In Vitro Study on Effect of Three Methods of Debridement on Periodontitis Root Surface

doi:10.13701/j.cnki.kqyxyj.2022.09.018

Abstract

Abstract: Objective: To assess the damage of three instruments to the root surface of periodontitis, and to provide reference for the reasonable selection in the treatment of periodontal maintenance. Methods: Forty-three teeth with severe periodontitis were randomly demarcated into 66 regions of 4 mm×4 mm. After subgingival scaling, the remaining areas were randomly divided into ultrasonic group, manual group, and sandblasting group. The root surface debridement was completed several times. The root surface roughness values (Ra) before treatment, after the first treatment, after the 20th treatment, after the 50th treatment, and after the 100th treatment were recorded for each group. The surface of root was observed under scanning electron microscope (SEM). Results: With the increase of debridement times, the root surface in all three groups gradually became smooth, but the roughness of the root surface in the manual group changed the most. Ra was significantly improved after the first treatment (P<0.05). The root surface polishing effect was the best in the sandblasting group, and Ra was stable after the 20th treatment. SEM observation demonstrated that the manual group had the best debridement effect on the root surface, but the damage to the root surface was the most serious, followed by ultrasound, and the sandblasting group had the least damage, and the best retention effect to the root surface cementum. Conclusion: Subgingival sandblasting caused the least damage to root surface while polishing the root surface, followed by ultrasonic, and then the manual instrument. Sand blasting is recommended for cleaning plaque biofilms during maintenance and treatment to preserve root tissue as much as possible.

Key words: supportive periodontal therapy, ultrasonic, sand blasting, root roughness, scanning electron microscope

XIA Jiaojiao, ZHANG Ye, LI Houxuan. In Vitro Study on Effect of Three Methods of Debridement on Periodontitis Root Surface[J]. Journal of Oral Science Research, 2022, 38(9): 882-886.

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